windmills are great and have relatively high efficiency due to the pure mechanical coupling... a staple of dry land well pumps for - well... must be now getting towards centuries

you really need to make a design with up-hill reservoirs though, idk if you've lived with house water systems that rely on pumps instead of filling a cistern, fucking annoying, cannot get a reasonable stable pressure out of them, always flipping off when it's perfect and going back to a trickle, then turning into a jet when you wanted a trickle